CF5761LB datasheet(7/10 Pages) NPC

tên linh kiện	CF5761LB

Giải thích chi tiết về linh kiện	CMOS Analog Clock IC with Alarm Function

PDF	10 Pages

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nhà sản xuất	NPC [Nippon Precision Circuits Inc]

Trang chủ	http://www.npc.co.jp/en

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7 / 10 page

CF5761 series

SEIKO NPC CORPORATION —7

Alarm Control

The alarm is controlled using AI, SN, and SEL inputs. These pins have built-in chattering elimination circuits

to prevent incorrect operation due to input chatter. The alarm output timing in response to these inputs is shown

in the following ﬁgure.

Input

Function

Input chatter elimination

Alarm control input.

When AI is active, the speciﬁed alarm pattern is output on AO1, AO2 and AO3.

tON < 62.5ms, the input is not accepted.

tON > 125ms, the input is accepted.

62.5ms

≤ tON ≤ 125ms, the input state is

undeﬁned.

Snooze function control input.

When the snooze input is accepted, the snooze time count begins. The snooze time is 300s.

SEL

Alarm function select input.

Selects one of two alarm patterns. When SEL is switched (from HIGH to LOW, or LOW to

HIGH), the snooze state and auto-stop function is released, and the alarm signal is output.

SEL

Alarm output

5min

B A

5min

5min 5min

5min

Auto-stop

released

Auto-stop

Snooze

released

Alarm

stops

OFF

CF5761LB bảng dữ liệu(PDF) 7 Page - Nippon Precision Circuits Inc